As companies move to web-based computing they get a lot more servers, which are difficult to manage and control. All kinds of problems can arise - security, quality and worms.

When screening engineers from other companies, its smart to value engineers from great companies more than those from mediocre companies.

You can't worry about the mistakes, because you're going to make a lot of them. You've got to be thinking about your next move.

Big companies have trouble with innovation. Innovation is about bad ideas, or ideas that look like bad ideas. That's the fundamental thing.

By far the most difficult skill I learned as a C.E.O. was the ability to manage my own psychology. Organizational design, process design, metrics, hiring and firing were all relatively straightforward skills to master compared with keeping my mind in check.

A good engineering interview will include some set of difficult problems to solve. It might even require that the candidate write a short program. In addition, it will test the candidate's knowledge of the tools she uses in great depth.